Combined carbureter-protector and electric cut-out for automobiles.



W. 0. NELSON;

AUTOMOBILES.

COMBINED GARBURETER PROTECTOR AND ELECTRIC 011mm FOR APPLICATION FiLED MAY 25, 1908.

Paten sed Nov, 22, 193.0.

yms? EEF l 7V 1 30 5110c ufor VJ. flNeLson TED STATES PATENT OFFICE.

WILLIAM o. NELSON, or BALTIMORE, MARYLAND.

COMBINED CABBURETER-PROTECTOR AND ELEGTRIC'CUT-OUT' FOR AUTOMOBILES.

Specification t Letters Patent.

Patented Nov. 22, 1910.

Application filed May 25, 1908. Serial No. 434,851.

To all whom it may concern:

Be it known that I, WIILIAAI O. NELSON, a citizen of the UnitedStates,'residing at Baltimore, State of Maryland, have invented certain new and useful Improvements 1n Combined Carbureter-Protectors and Electric Gut-Outs for Automobiles; and I do hereby declare the following to be a full,

, clear, and exact description of the invention,

such as will enable others skilled in the art to which it appertains to make and use the same. I r

The present invention relates to improvements in carbureter protectors, and 1t, has for its principal object the provision of an extremely simple and' inexpensive device arranged for locationin the gas line between the carbureter and the motor and constructed and designed to operate automat1cally under the influence of excessive pressure within the gas line, as in the case of a back fire, so as to afiord an egress opening for the ignited gases and thus prevent the same from traveling back into the carburetor;

It is also an important ob pect of the 1nvention to provide a. device-of the nature specified which, when operated, will serve as an electric cut-out, by breaking the circuit in which the battery and sparking apparatus are included.

The invention has for a further object the provision of a device which in addition to its automatic operation above referred to,

. may be manually operated for the purpose of admitting air into the motor, the object being to enable the operator to use the engine as a brakenvithout consuming either electric current ()1- fuel to cool the engine; to allow the cylindersto become thoroughly lubricated with pure oil while running idle with no combustion to foul or burn the lubricant; and to blow away any carbon deposited by previous explosions or to impreghate the same with oxygen so that. it ma) be.

consumed by subsequent explosions. thus keeping the cylinders clean and free from objecliomible and injurious deposits and in the best condition to perform their functions.

To this end, the invention comprises a metal sleeve having its threaded inner end fitted in an opening formed in the main fer-d pipe which leads from the. carburetor to the intake pipes, and its outer end normally closed by a 5])l'lllg-[H'QSSOd cover provided with a contact, the other contact being carried by the sleeve, the primary circurt which includes the motor, the battery,

Fand the sparking apparatus being completed wheat-he cover is in its closed position, and broken when the cover is opened, 1n whlch latter instance when the operation of the,

device is automatic, or in other words, due to the excessive pressure within the pipe, the sleeve will serve as a by-pass through which the gas escapes, thus preventing the flame from traveling back through the .feed

pipe to the carbure te r. \Vhen, however, the

cover is operated manually, the current of air admitted through the sleeve and the'feed pipes will flush the engine and blow, out the carbon deposits which have formed upon the pistons. V

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which corresponding parts are designated by the same reference numerals throughout the several. views.

Of the said drawings, Figure 1 is a side.

elevation of the motor of an automobileand its attendant parts, showing the cut-out in.

place. Figs. 2 and 3 are, respectively, a longitudinal section and a bottom plan view of the cut-off, both figures being taken on an enlarged scale.

Referring more particularly to the draw-' which the invention resides, comprises a metal sleeve 1'0 having its-threaded inner end 11 open, and its paler end provided with. a cover 12, the:firstqnentioned end of the sleeve being fitted in the threaded end of the stem of a T-joint 13 bolted to the supplypipe 6, which latter has an opening formed therein directly opposite the stem of said joint and the sleeve. The cover is normally I held in closed position by means of a retractile coil-spring 14 pne end of which is attached to a book 15 secured to the cover, while its other end is connected to a rod 16 whose laterally-bent rear end terminates in a hook 17 to which the spring end is .at-

tached, said rod having its forward portion dis osed'withinthe interior-of the sleeve, an its rear endprojecting tlierebeyond. llhe enlarged front end or head of the rod fits in an opening'formed in the side wall of thQSlQVG-f g The cover 12 is hinged at its upper, end to the sleeve, as shown. in Fig. 2, and is provided adjacent'the hinge with an integral arm 18, which extends upwardly and slightly toward the dash-board 19'of the car, said arm terminating at its free end in an eye 20, to which is pivotally connected the inner end oi a foot-rod 21 which projects through an opening 22 formed in the dash-board and is provided at its outer end with a head 23. Inward movement of the rod will, therefore, open the cover against the tension of the spring, as will be apparent, whereupon a current of air will flow through the sleeve and the intake pipes, and finally into the engine cylinders. The rod is retained in its adjusted position, after having been moved inwardly to'the proper extent, by means of a plate 24 which is secured to the inner face of the dash-board directly below the open-.

I ing 22, the beveled upper edge of the plate being arranged for'interchangeable engagement in a series of notches 25 formed in the under surface of the rod.

At its lower 'end the cover has secured thereto acoritact piece 26 in the form of a blade, which normally fits between the legs of a bent contact plate 27 carried by an insii lated plug 28 secured to the adjacent portion a of a plu 28 secured to the adjacent portion of the si e wall of the/sleeve, said plate carrying a binding screw 29 to which is attached one terminal of the wire a which forms one of the wires of the primary circuit, the other terminal of said wire being connected to the battery 4, to which latter one terminal of the other wire I) of said cir-.

cuit is connected, the other terminal being connected to the sparking apparatus 3. The -two cylinders of the motor are provided with the usual sparking plugs 30 to which one set of terminals of the conductors a and b of the secondary circuit are attached, thematically, thus providing an egress opening the supply pipe, whence it flows into the en gine cylinder.

' It will of course be understood'that when the push rod 21 ismoved so thatthe most forwardly disposed notch therein engages with the plate 24 the gear 12 will be moved a sufficient distance to break the electrical contact. The purpose of providing means for a further opening of the cover is to permit the air to reach the heated portions of the engine at a lower temperature than can be effected when the cover 12is o enonly a small distance and thus very quicli'ly reduce the temperature of the engine.

That is claimed is: r

1. The combination of an explosive motor; a earbureter operatively connected therewith; a hollow-member located in' the gas line between the earbureter and the m tor; a 'cover hinged to said member and provided with an arm; means for yieldingly holding the coverin' closed position, said cover being adapted to open automatically against the action of said holding means under the' influence .of' excessive pressure within the gas line to provide a vent; and a manually operated member connected to .said arm for opening said cover to admit ail between the carbureter and the motor.

2.- The combination with an explosive motor, a carbureter cpnnected therewith, a hol low member located in the gas line between the carbureter and motor, a cover hinged to said member, means for yieldingly holding the cover in closed position, said cover being adapted to open automatically against the actionof said holding means under the influence of excessive pressure within the gas line to provide a'vent and a manually operated member connected to said cover for operating the latter to admit air between the .arloureter and the motor.

3. The c mbination, of an explosive motor; a caroureter operatively connected therewith; a hollow member located in the gas line between the carbureter and the motor; an outwardly opening cover pivoted to said member; an interiorly-dis osed rod secured at one end to said mem er and provided at the other end with a hook; a spring located within the interior of said member,

,and connected at opposite ends with said hook andcover, for normally retaining the latter in closed position; and means for opening the cover against the action of the spring, to admit air between the carbureter j, and the motor.

A. The combination, of an explosive motor, an. electric sparking mechanism, a carbureter operatively connected with the Inc tor}; a hollow member located in the gas line 1 between the carburetor and the motor and circuit of said sparking mechanism, a 'elding cover pivoted to said, member an provided with a contact also in the circuit of said sparking'mechanism and arranged for engagement with the first mentioned Contact when the cover is closed to close the circuit A of said sparking mechanism, means for between the the carbureter and the motor and provided with an electrical contact in the circuit of the sp arking,mechanism, a yielding cover pivoted to said member and provided with a contact also in the circuit of the sparking mechanism and arranged for engagement vwith the first mentioned contact when the cover is closed to close the circuit of the sparking mechanism, means for normally holding the means for opening the cover, to admit air between the carbureter and the motor and to release said contacts'from engagement with each other whereby the circ'uit of the sparking mechanism is broken.

6, ihe combination, of an explosive motor,' a sparking mechanism for firing said motor, a carbureter .operativelyfconnected with the motor, a hollow member'located in the gas line between the carbureter and the motor provided with an electrical contact in the circuit of said sparking mechanism a cover pivoted to said member 'and provided with a contact also in the circuit ofsaid sparking mechanism and arranged for en-f gagement with the first mentioned contact when the cover is closed to close the circuit provided-with an electrical contact in the release said of the sparking mechanism, a spring located within the interior of said member and con-- nectcd with the cover for normally holding the same in closed position, and means connected with the cover for opening the same, to admit air between the carbureter and the motor, and to release said contacts from engagement with each other whereby the circuit of the sparking mechanism is broken.

7. The combination of an explosive motor, a sparking mechanism for firing said motor, a carbureter operatively connected with the motor, a hollow member located in the gas line between the carbureter and the motor provided with an electrical contact in the circuit of the sparking mechanism, a cover pivoted to said member and a contact also in the circuit 0 the sparking mechanism andarranged for engagement with the first mentioned contact when the cover'is'closed to close the circuit of the sparking mechanism, an interiorly disposed rodsecured at one end to said member and provided at the other end with a hook, a

rovided withv spring disposed within the interior of said member and connected'at the opposite end with a hook, and a'cover for normally holding the same in closed position; and means for holding the cover against the action of the spring, to admit air between the carbureter and the motor and to release said contacts from engagement with each other whereby the circuit of the sparking-mecha nisin will be broken. g 8. The combination of an explosive motor, a sparking mechanism for firing said' motor, a carburetor, a gas line provided with an opening leading to the atmosphere and located between the carbureter and motor, a pivoted cover normally and means for swinging said cover to open position with respect to said opening and means actuated by the movement of said cover in opening to break the circuit of the sparking mechanism.

In testimony whereof, I atiix my signature, in presence of two witnesses.

WILLIAM o. NELSON. l-Vitnesses J AS. I'IILLEARY, J r., BENJ. W. SMITH. 

